Home / 8,988.54-13,488.88-3,145.20

Finding the Fourth Proportional to 8,988.54, 13,488.88 and 3,145.20

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Solution

The fourth proportional to 8,988.54, 13,488.88 and 3,145.20 is: 4,719.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.54 : 13,488.88 = 3,145.20 : x
  2. Step 2: Convert to fraction form
    8,988.54/13,488.88 = 3,145.20/x
  3. Step 3: Cross multiply
    8,988.54x = 13,488.88 × 3,145.20
  4. Step 4: Simplify right side
    8,988.54x = 42,425,225.38
  5. Step 5: Solve for x
    x = 42,425,225.38/8,988.54
  6. Step 6: Final answer
    x = 4,719.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.